轮胎扎钉对电动汽车电磁兼容性能影响的研究

Study on Electromagnetic Compatibility of Tire Pins for Electric Vehicles

电动汽车在进行GB34660-2017标准要求的宽带发射试验时,车辆一般在半电波暗室(ALSE)内转毂上40km/h车速下进行试验。当轮胎扎钉时,金属钉子与金属转毂间的接触与分离会促使金属间产生摩擦带电的现象,通过理论分析得到该现象产生的静电放电效应在30_1000MHz宽频带会产生较大的对外发射,影响电动汽车的宽带发射结果。通过实际静电放电测试,验证了静电放电效应对辐射发射测量的影响。

When electric vehicles undergo the broadband emission test by the mandatory standards GB34660-2017,the vehicle is generally examined at the upper speed of 40 km/h on the hub in the Absorber Lined Shielded Enclosure(ALSE).If a tire of the vehicle is pinned,the contact and separation between the metal nail and the metal hub will promote the phenomenon of friction charging between metals.Though theoretical analysis,it is obtained that the electrostatic discharge will produce large external emission in the frequency range of 30-1000 MHz,which affects the broadband emission results for electric vehicles.By means of the real electrostatic discharge experiment,the influence on radiation emission measurement of vehicles is verified because of electrostatic effects.